Assig-nob op one-half to



(No Model.) 2 Sheets-Sheet 1.

E. BOILEAU. LAMP BURNER.

No. 25 ,010. 1 Patented May 16, 1882.

N. PETERs Phnlolilhcgnphur. Wnhinstnn. n, c.

\ (No Model.) 2 Shets-Sh'eet 2.

- E. BOILEAU. l LAMP BURNER.

No. 258,010. Patented May 16, 1882.

' Fig.9.

N. PETERS Fhalml magrlp hu, Washington. a. c.

U ITED STATES PATENT GFFICE.

ETIENNE BOILEAU, OF ST. LOUIS, MISSOURI, ASSIGNOR OF. ONE-HALF TO WILLIAM SOMERVILLE, OF SAME PLACE.

' LAMP-BURNER.

SPECIFICATION forming part of Letters Patent No. 258,010, dated May 16, 1882,

Application filed January 16, 1882. (No model.)

To all whom it may concern: Be it known that I, ETIENNE BOILEAU, of

the city of St. Louis, in the State of Missouri, have invented a certain new and useful Improvement in- Wick-ltaisers for Lamp-Burners, of which the following is a specification, reference beinghad to the accompanying drawings, forming part of the same.

My improvement relates to an efficient de- 1o vice for raising and lowering the wick in an Argand burner by means of two spring-claws attached to a vertically-sliding ring and operated by a cam turned by the chimney-holder. In the drawings, Figure l is a perspective view of the burner. Fig. 2 is aview of the same partlyin vertical section at 2 2,.Fig. 5, and partly in side elevation. Fig. 3 is a similar view, partly in section at 2 2, with the flange-cam turned in position to bring the parts marked by broken line 3 Sinto the plane of the section 2 2. Fig. 4; is a side view of part of the outer wick-tube. Fig. 5 is a horizontal section at 5 5, Fig. 2. Fig. 6 is a horizontal section at 6 6, Fig. 3. Fig. 7 is a side view of the cam-flange. Fig. 8 is a perspective view of the claw-ring. Fig. 9 is an under perspective view of the cam-ring and cam and the wick-raising claws and ring to which they are connected.

The burner has" a base, A, whose neck a screws luto the lamp-reservolr, as usual.

B is the outer wick-tube, attached at the lower end to the neck a.

G is the inner wick-tube, secured.concentrically in the tube B by a rib, D. (See Figs. 5 and 6.) Ihrough the sides of the tubes B (J andthrough the rib D 'is formed an opening, D, for the entrance of air into the interior tube, (J, for the supply of air at the in- 0 side of the circular frame.

E is the wick filling the annular space between the tubes B and G. The tube B has vertical slots I), through which the teeth f of the claws F pass to engage the wick. The 5 claws F have each two vertical series of teeth to take a firm hold of the wick.

I am aware that lifting-claws have been before made with a horizontal series of teeth; but the engagement of the teeth upon the 59 wick is somewhat uncertain, as all of the teeth are liable to come in contact with a single filling-thread of the wick and force the wick a little distance upward or downward in enterin g between the threads, so that the claws of the two sides do not maintain uniformity of action, and the wick is raised unevenly and becomes jammed in its annular socket.

The outer sides, b, of the slots 1) are turned out in flanges, forming upon the outer side guides for the ring G, to which the claws are 60 connected, and upon the inner side guides to the claws, preventing their lateral displacement when disengaged from the wick. The claws F are connected to the ring G by springs H, which tend to hold the teeth of the claws out of engagement with the wick.

h are notched studs projecting from each of l the springs H and embracing the edge of the flange-cam I, to give to the ring G and claws F their vertical movement and to the latter their inward and outward movement. The cam I projects inwardly from the turning-ring J,

which is turned by the chimney-holder K by means of projections j and is upon the two rings J and K, respectively, (said ribs or projections engaging each other.) The flangecam I has two broad partsor portions,i, which force the claws into the wick, (see Figs. 3,

5, 7,) such portions having inclination to move the claws and ring G vertically while the claws are in engagement with the wick. At t" (see Figs. 2, 5, 7) the flange is so narrow that the claws are allowed to move outward under the influence of the springs H,

so that their teeth are out of engagement with 8 5 the wick. The parts 2" are inclined in an opposite direction to the parts t, so that in the continued rotation of the ring J the partsi and i impart to the claws an alternate ascending and descending motion, raising or lower- 0 ing the wick by a series of intermittent movements, according to the direction in which the parts are turned. Between the vertically-inclined parts z' t" of the cam are horizontal parts i whose edges are inclined in such a manner 5 as to force the claws F toward the wick, or to allow them to spring outward therefrom under influence of the springs H. Thus it will be seen that when the claws are moving inward and outward to and from the wick they have I00 no vertical movement, so that the movements of the parts are positive and regular, and this insures the regular movement of the Wick.

I have shown the claws F connected to the ring G by flat springs H; but the springs H may be made of wire, and the forks It may be made by bending the wire in a suitable manner. The lateral movement of the claws when in their outer position would be restrained by 10 the flanges b.

I claim as my invention A lamp-burner having a vertically-sliding ring with spring-claws having notched studs connected thereto, and the cam I with inclined portions 41 and t", constructed and operating I5 substantially asset forth.

ETIENNE BOILEAU. Witnesses:

SAML. KNIGHT, GEo. H. KNIGHT. 

